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bc63d387 DN |
1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
6 | * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. | |
7 | */ | |
8 | ||
9 | /* | |
10 | * Cross Partition (XP) uv-based functions. | |
11 | * | |
12 | * Architecture specific implementation of common functions. | |
13 | * | |
14 | */ | |
15 | ||
a812dcc3 DN |
16 | #include <linux/device.h> |
17 | #include <asm/uv/uv_hub.h> | |
6c1c325d DN |
18 | #if defined CONFIG_X86_64 |
19 | #include <asm/uv/bios.h> | |
20 | #elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV | |
21 | #include <asm/sn/sn_sal.h> | |
22 | #endif | |
a812dcc3 | 23 | #include "../sgi-gru/grukservices.h" |
bc63d387 DN |
24 | #include "xp.h" |
25 | ||
a812dcc3 DN |
26 | /* |
27 | * Convert a virtual memory address to a physical memory address. | |
28 | */ | |
29 | static unsigned long | |
30 | xp_pa_uv(void *addr) | |
31 | { | |
32 | return uv_gpa(addr); | |
33 | } | |
34 | ||
908787db | 35 | static enum xp_retval |
a812dcc3 DN |
36 | xp_remote_memcpy_uv(unsigned long dst_gpa, const unsigned long src_gpa, |
37 | size_t len) | |
908787db | 38 | { |
a812dcc3 DN |
39 | int ret; |
40 | ||
41 | ret = gru_copy_gpa(dst_gpa, src_gpa, len); | |
42 | if (ret == 0) | |
43 | return xpSuccess; | |
44 | ||
45 | dev_err(xp, "gru_copy_gpa() failed, dst_gpa=0x%016lx src_gpa=0x%016lx " | |
46 | "len=%ld\n", dst_gpa, src_gpa, len); | |
47 | return xpGruCopyError; | |
908787db DN |
48 | } |
49 | ||
5b8669df DN |
50 | static int |
51 | xp_cpu_to_nasid_uv(int cpuid) | |
52 | { | |
53 | /* ??? Is this same as sn2 nasid in mach/part bitmaps set up by SAL? */ | |
54 | return UV_PNODE_TO_NASID(uv_cpu_to_pnode(cpuid)); | |
55 | } | |
56 | ||
6c1c325d DN |
57 | static enum xp_retval |
58 | xp_expand_memprotect_uv(unsigned long phys_addr, unsigned long size) | |
59 | { | |
60 | int ret; | |
61 | ||
62 | #if defined CONFIG_X86_64 | |
63 | ret = uv_bios_change_memprotect(phys_addr, size, UV_MEMPROT_ALLOW_RW); | |
64 | if (ret != BIOS_STATUS_SUCCESS) { | |
65 | dev_err(xp, "uv_bios_change_memprotect(,, " | |
66 | "UV_MEMPROT_ALLOW_RW) failed, ret=%d\n", ret); | |
67 | return xpBiosError; | |
68 | } | |
69 | ||
70 | #elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV | |
71 | u64 nasid_array; | |
72 | ||
73 | ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_1, | |
74 | &nasid_array); | |
75 | if (ret != 0) { | |
76 | dev_err(xp, "sn_change_memprotect(,, " | |
77 | "SN_MEMPROT_ACCESS_CLASS_1,) failed ret=%d\n", ret); | |
78 | return xpSalError; | |
79 | } | |
80 | #else | |
81 | #error not a supported configuration | |
82 | #endif | |
83 | return xpSuccess; | |
84 | } | |
85 | ||
86 | static enum xp_retval | |
87 | xp_restrict_memprotect_uv(unsigned long phys_addr, unsigned long size) | |
88 | { | |
89 | int ret; | |
90 | ||
91 | #if defined CONFIG_X86_64 | |
92 | ret = uv_bios_change_memprotect(phys_addr, size, | |
93 | UV_MEMPROT_RESTRICT_ACCESS); | |
94 | if (ret != BIOS_STATUS_SUCCESS) { | |
95 | dev_err(xp, "uv_bios_change_memprotect(,, " | |
96 | "UV_MEMPROT_RESTRICT_ACCESS) failed, ret=%d\n", ret); | |
97 | return xpBiosError; | |
98 | } | |
99 | ||
100 | #elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV | |
101 | u64 nasid_array; | |
102 | ||
103 | ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_0, | |
104 | &nasid_array); | |
105 | if (ret != 0) { | |
106 | dev_err(xp, "sn_change_memprotect(,, " | |
107 | "SN_MEMPROT_ACCESS_CLASS_0,) failed ret=%d\n", ret); | |
108 | return xpSalError; | |
109 | } | |
110 | #else | |
111 | #error not a supported configuration | |
112 | #endif | |
113 | return xpSuccess; | |
114 | } | |
115 | ||
bc63d387 DN |
116 | enum xp_retval |
117 | xp_init_uv(void) | |
118 | { | |
119 | BUG_ON(!is_uv()); | |
120 | ||
121 | xp_max_npartitions = XP_MAX_NPARTITIONS_UV; | |
31de5ece DN |
122 | xp_partition_id = sn_partition_id; |
123 | xp_region_size = sn_region_size; | |
908787db | 124 | |
a812dcc3 | 125 | xp_pa = xp_pa_uv; |
908787db | 126 | xp_remote_memcpy = xp_remote_memcpy_uv; |
5b8669df | 127 | xp_cpu_to_nasid = xp_cpu_to_nasid_uv; |
6c1c325d DN |
128 | xp_expand_memprotect = xp_expand_memprotect_uv; |
129 | xp_restrict_memprotect = xp_restrict_memprotect_uv; | |
908787db DN |
130 | |
131 | return xpSuccess; | |
bc63d387 DN |
132 | } |
133 | ||
134 | void | |
135 | xp_exit_uv(void) | |
136 | { | |
137 | BUG_ON(!is_uv()); | |
138 | } |